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A control method for a linear accelerator and the linear accelerator

A technology of a linear accelerator and a control method, which is applied in the direction of DC voltage accelerators, X-ray equipment, accelerators, etc., can solve the problems of unstable imaging beam dose rate and affecting imaging quality, and achieve the goal of improving dose stability and stabilizing energy Effect

Active Publication Date: 2020-03-17
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the AFC module 14 continues to work, the dose rate of the imaging beam is still unstable, which affects the imaging quality. This is a technology that medical imaging equipment such as CBCT, especially MV-level CBCT, needs to solve urgently. question

Method used

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  • A control method for a linear accelerator and the linear accelerator
  • A control method for a linear accelerator and the linear accelerator
  • A control method for a linear accelerator and the linear accelerator

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Embodiment Construction

[0044] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0046] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other st...

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Abstract

The invention provides a linear accelerator control method and a linear accelerator applying the same. The control method is used for stabilizing the dosage rate of emergent rays of the linear accelerator, the linear accelerator comprises a microwave power source, an accelerating tube and an automatic frequency stabilizing module, the microwave power source is used for generating accelerating microwave pulses, the accelerating tube is used for accelerating injected electronic pulses, and the automatic frequency stabilizing module is used for tuning accelerated microwave pulse frequency. In a period of switching between a first state with ray beams and a second state without the ray beams, the automatic frequency stabilizing module locks the accelerated microwave pulse frequency to an operating frequency of the accelerating tube in the first state or the second state. The linear accelerator and the control method have the advantage that the stable dosage rate of emergent ray beams is realized.

Description

technical field [0001] The invention mainly relates to the field of linear accelerators, in particular to a method for stabilizing the dose rate of outgoing ray beams and a linear accelerator. Background technique [0002] The basic principle of cone beam computed tomography (CBCT) is as follows: figure 1 As shown, the position of the cone beam X-ray source 10 and the detector 2 are relatively fixed, and they rotate and scan around the object 3 along the direction A to obtain two-dimensional projection images of the object 3 at various angles, and then use the reconstruction algorithm to construct A three-dimensional image of the inside of the detected object 3 . At present, CBCT has been widely used in the imaging of the oral cavity and the head, and has also been applied in the positioning confirmation of the image-guided radiation therapy (Image Guided Radiation Therapy, IGRT). [0003] Generally speaking, CBCT consists of 360 pictures in one circle, or 180 pictures in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H5/02H05G1/58
Inventor 傅费超章卫王梦珂徐一鸣
Owner SHANGHAI UNITED IMAGING HEALTHCARE